CA2830344C - Dispositif et procede d'evaluation de la corrosion - Google Patents

Dispositif et procede d'evaluation de la corrosion Download PDF

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Publication number
CA2830344C
CA2830344C CA2830344A CA2830344A CA2830344C CA 2830344 C CA2830344 C CA 2830344C CA 2830344 A CA2830344 A CA 2830344A CA 2830344 A CA2830344 A CA 2830344A CA 2830344 C CA2830344 C CA 2830344C
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CA
Canada
Prior art keywords
image
corrosion
video
interest
camera
Prior art date
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Active
Application number
CA2830344A
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English (en)
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CA2830344A1 (fr
Inventor
Terence STEBBINGS
Jonathan Thursby
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EV Offshore Ltd
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EV Offshore Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by EV Offshore Ltd filed Critical EV Offshore Ltd
Publication of CA2830344A1 publication Critical patent/CA2830344A1/fr
Application granted granted Critical
Publication of CA2830344C publication Critical patent/CA2830344C/fr
Active legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/952—Inspecting the exterior surface of cylindrical bodies or wires
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G06T7/001—Industrial image inspection using an image reference approach
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10024—Color image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30136—Metal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30164—Workpiece; Machine component

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

L'invention concerne un dispositif et un procédé d'évaluation de la corrosion. Elle concerne en particulier l'évaluation de niveaux de corrosion sur des canalisations dans des environnements en mer. Le procédé d'analyse des niveaux de corrosion sur une surface d'une structure comprend les étapes consistant à: capturer une pluralité d'images numériques incluant la surface de la structure, ces images comprenant des trames individuelles d'une vidéo en continu; et analyser chacune de ladite pluralité d'images. L'étape d'analyse de chaque image comprend la sélection d'une zone intéressante dans une image; l'attribution d'une valeur numérique à chaque pixel de la zone intéressante, ladite valeur numérique correspondant à la couleur de ce pixel; le calcul, à partir des valeurs numériques des pixels, d'une moyenne en nombre pour l'image; et la comparaison de la moyenne en nombre de l'image à un ensemble de moyennes en nombre de référence correspondant à un ensemble de niveaux de corrosion standard, afin de déterminer un niveau de corrosion associé à cette image.
CA2830344A 2011-03-22 2012-03-06 Dispositif et procede d'evaluation de la corrosion Active CA2830344C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1104811.3 2011-03-22
GB1104811.3A GB2489253B (en) 2011-03-22 2011-03-22 Corrosion assessment apparatus and method
PCT/GB2012/050497 WO2012127207A1 (fr) 2011-03-22 2012-03-06 Dispositif et procédé d'évaluation de la corrosion

Publications (2)

Publication Number Publication Date
CA2830344A1 CA2830344A1 (fr) 2012-09-27
CA2830344C true CA2830344C (fr) 2019-02-05

Family

ID=44012966

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2830344A Active CA2830344C (fr) 2011-03-22 2012-03-06 Dispositif et procede d'evaluation de la corrosion

Country Status (3)

Country Link
CA (1) CA2830344C (fr)
GB (1) GB2489253B (fr)
WO (1) WO2012127207A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10107686B1 (en) * 2014-03-03 2018-10-23 Ayalytical Instruments, Inc. Vision strip analyzer
JP6548157B2 (ja) * 2015-05-27 2019-07-24 パナソニックＩｐマネジメント株式会社 劣化診断装置及び劣化診断方法
DE102018121997A1 (de) * 2018-09-10 2020-03-12 Pöttinger Landtechnik Gmbh Verfahren und Vorrichtung zur Verschleißerkennung eines Bauteils für landwirtschaftliche Geräte
CN110544009B (zh) * 2019-07-26 2022-12-09 中国人民解放军海军航空大学青岛校区 基于数字图像处理的航空有机涂层老化损伤量化评估方法
CN113063719B (zh) * 2019-12-31 2022-08-16 元心科技(深圳)有限公司 可吸收支架腐蚀程度的评估方法及系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647220A (en) * 1984-07-09 1987-03-03 Lockheed Corporation Method of and apparatus for detecting corrosion utilizing infrared analysis
JP3181543B2 (ja) * 1997-10-31 2001-07-03 東京電力株式会社 表面処理された鋼材の劣化・腐食検出判定方法
JP3329767B2 (ja) * 1999-06-21 2002-09-30 東京電力株式会社 鋼材の劣化・腐食検出判定方法
JP3597439B2 (ja) * 2000-03-16 2004-12-08 株式会社巴コーポレーション 塗装された鋼材の塗装劣化の診断方法
US6704044B1 (en) * 2000-06-13 2004-03-09 Omnivision Technologies, Inc. Completely integrated baseball cap camera
US20050151841A1 (en) * 2002-03-25 2005-07-14 Nelson Bruce N. Automated inspection and processing system
GB0501653D0 (en) * 2005-01-26 2005-03-02 3D Scanners Ltd Method and apparatus for analysis of corrosion scans
US7822273B1 (en) * 2007-05-16 2010-10-26 Gianni Arcaini Method and apparatus for automatic corrosion detection via video capture
JP2009115528A (ja) * 2007-11-05 2009-05-28 Nakanihon Highway Engineering Nagoya Kk 金属部材の腐食率計測方法
US8757831B2 (en) * 2007-12-18 2014-06-24 Michael Waters Headgear having an electrical device and power source mounted thereto

Also Published As

Publication number Publication date
GB201104811D0 (en) 2011-05-04
GB2489253A (en) 2012-09-26
CA2830344A1 (fr) 2012-09-27
WO2012127207A1 (fr) 2012-09-27
GB2489253B (en) 2014-08-13

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